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Path: /opt/chef.upgrade/embedded/lib/ruby/gems/2.3.0/gems/nokogiri-1.7.2/ext/nokogiri/

Viewing File: xml_namespace.c

#include <xml_namespace.h>

VALUE cNokogiriXmlNamespace ;

static void dealloc_namespace(xmlNsPtr ns)
{
  /*
   *
   * this deallocator is only used for namespace nodes that are part of an xpath
   * node set.
   *
   * see Nokogiri_wrap_xml_namespace() for more details.
   *
   */
  NOKOGIRI_DEBUG_START(ns) ;
  if (ns->href) {
    xmlFree((xmlChar *)ns->href);
  }
  if (ns->prefix) {
    xmlFree((xmlChar *)ns->prefix);
  }
  xmlFree(ns);
  NOKOGIRI_DEBUG_END(ns) ;
}


int Nokogiri_namespace_eh(xmlNodePtr node)
{
  return (node->type == XML_NAMESPACE_DECL);
}


/*
 * call-seq:
 *  prefix
 *
 * Get the prefix for this namespace.  Returns +nil+ if there is no prefix.
 */
static VALUE prefix(VALUE self)
{
  xmlNsPtr ns;

  Data_Get_Struct(self, xmlNs, ns);
  if(!ns->prefix) return Qnil;

  return NOKOGIRI_STR_NEW2(ns->prefix);
}

/*
 * call-seq:
 *  href
 *
 * Get the href for this namespace
 */
static VALUE href(VALUE self)
{
  xmlNsPtr ns;

  Data_Get_Struct(self, xmlNs, ns);
  if(!ns->href) return Qnil;

  return NOKOGIRI_STR_NEW2(ns->href);
}

static int part_of_an_xpath_node_set_eh(xmlNsPtr node)
{
  return (node->next && ! Nokogiri_namespace_eh(node->next));
}

VALUE Nokogiri_wrap_xml_namespace(xmlDocPtr doc, xmlNsPtr node)
{
  VALUE ns, document, node_cache;

  assert(doc->type == XML_DOCUMENT_NODE || doc->type == XML_HTML_DOCUMENT_NODE);

  if (node->_private) return (VALUE)node->_private;

  if (doc->type == XML_DOCUMENT_FRAG_NODE) doc = doc->doc;

  ns = Data_Wrap_Struct(cNokogiriXmlNamespace, 0, 0, node);

  if (DOC_RUBY_OBJECT_TEST(doc)) {
    document = DOC_RUBY_OBJECT(doc);

    if (part_of_an_xpath_node_set_eh(node)) {
      /*
       *  this is a duplicate returned as part of an xpath query node set, and so
       *  we need to make sure we manage this memory.
       *
       *  see comments in xml_node_set.c for more details.
       */
      ns = Data_Wrap_Struct(cNokogiriXmlNamespace, 0, dealloc_namespace, node);
    } else {
      ns = Data_Wrap_Struct(cNokogiriXmlNamespace, 0, 0, node);
      node_cache = rb_iv_get(document, "@node_cache");
      rb_ary_push(node_cache, ns);
    }

    rb_iv_set(ns, "@document", document);
  }

  node->_private = (void *)ns;

  return ns;
}

void init_xml_namespace()
{
  VALUE nokogiri  = rb_define_module("Nokogiri");
  VALUE xml       = rb_define_module_under(nokogiri, "XML");
  VALUE klass     = rb_define_class_under(xml, "Namespace", rb_cObject);

  cNokogiriXmlNamespace = klass;

  rb_define_method(klass, "prefix", prefix, 0);
  rb_define_method(klass, "href", href, 0);
}